Adjustable flame burner for the combustion of hydrogen, oxygen and fuel

Abstract

The present invention discloses a flame-adjustable burner for the combined combustion of oxygen and hydrogen with fuel, comprising: an oxygen and hydrogen mixed spraying device, a rotating airflow regulating structure and a combustion nozzle; the rotating airflow regulating structure comprises an air inlet shell, and a cyclone, a swirler and a regulator connected in sequence, the cyclone and the swirler being installed in the air inlet shell; the combustion nozzle being installed at the air outlet of the air inlet shell; the cyclone, the swirler and the combustion nozzle being connected to form an air outlet channel; the oxygen and hydrogen mixed spraying device being installed in the air outlet channel. The flame-adjustable burner for the combined combustion of oxygen and hydrogen with fuel of the present invention can change the swirl intensity at the outlet of the combustion-supporting air, and achieve the change between the length of the combustion flame under the condition that the combustion power remains unchanged. The catalytic properties of oxygen and hydrogen are utilized to improve the ignition performance of the fuel, increase the burnout rate, reduce the carbon black in the flue gas, and reduce the pollution of the combustion to the environment.

Description

Technical Field

[0001] The invention relates to the technical field of burners for industrial heating, in particular to a flame-adjustable burner for the combined combustion of hydrogen and oxygen and fuel. Background Art

[0002] Industrial heating burners use liquid fuels: diesel, heavy oil, etc., or gas fuels: natural gas, liquefied gas, etc., which are more common. The oxidant is generally directly air. The flame shape of the burner mainly depends on the mixed flow state of air and fuel. Due to the oxygen content of the air itself, the volume flow rate of air is much larger than the volume flow rate of fuel when using high calorific value fuels. In this way, the air flow state also mainly determines the flame shape. In industrial heating, due to the requirements of the furnace shape and heating process, the flame shape of the burner needs to be able to be adjusted at any time while the heating power remains unchanged to meet production needs. The prior art also uses adjustable methods to adjust the airflow shape, but due to the limitations of the burner structure, it often fails to meet the required requirements. Summary of the invention

[0003] The main technical problem solved by the present invention is to provide a flame-adjustable burner for the combustion of hydrogen and oxygen combined with fuel, which can change the swirl intensity at the combustion air outlet and achieve the change of the combustion flame length under the condition of constant combustion power. The catalytic properties of hydrogen and oxygen are used to improve the ignition performance of the fuel, increase the burnout rate, reduce the carbon black in the flue gas, and reduce the pollution of the combustion to the environment.

[0004] In order to solve the above technical problems, a technical solution adopted by the present invention is: to provide a flame adjustable burner for the combined combustion of hydrogen and oxygen and fuel, comprising: a hydrogen and oxygen and fuel mixing spray device, a rotating airflow adjustment structure and a combustion nozzle; the rotating airflow adjustment structure comprises an air inlet shell, and a cyclone, a swirler and a regulator connected in sequence, the cyclone and the swirler are installed in the air inlet shell; the combustion nozzle is installed at the air outlet of the air inlet shell; the cyclone, the swirler and the combustion nozzle are connected to form an air outlet channel; the hydrogen and oxygen and fuel mixing spray device is installed in the air outlet channel.

[0005] In a preferred embodiment of the present invention, the fuel that is burned in combination with hydrogen and oxygen is liquid fuel, and can also be designed to be gas fuel, solid fuel or a mixture of multiple fuels.

[0006] In a preferred embodiment of the present invention, the combustion nozzle is in a bell-mouth shape.

[0007] In a preferred embodiment of the present invention, the rotating airflow regulating structure has two positions adjusted by a regulator: a tangential entry position of the combustion air and a radial entry position of the combustion air.

[0008] In a preferred embodiment of the present invention, the rotating airflow regulating structure is located at the tangential entry position of the combustion air, and a radial diffusion airflow is formed at the combustion nozzle to form a short flame or even a flat flame.

[0009] In a preferred embodiment of the present invention, the rotating airflow regulating structure is located at the radial entry position of the combustion-supporting air, and an axial airflow is formed at the combustion nozzle to form a torch-shaped long flame.

[0010] In a preferred embodiment of the present invention, the air inlet housing includes an internal cavity, an air inlet and an air outlet; the air guide pipe is located at the air outlet; the vortex regulator and the cyclone are located in the internal cavity, the vortex regulator includes a rear sleeve and a vortex regulating tube, the rear sleeve is installed at the tail end of the internal cavity, the vortex regulating tube includes a slotted section and a sealing section, the slotted section of the vortex regulating tube is sleeve-connected with the rear sleeve; one end of the cyclone is connected to the sealing section of the vortex regulating tube, and the other end of the cyclone is connected to the air guide pipe;

[0011] The regulator is connected to the swirl adjusting tube, and the swirl adjusting tube moves back and forth between the rear sleeve and the air guide tube; when the swirl adjusting tube is located at the rear end, the cyclone is connected to the air guide tube to form a cyclone channel; when the swirl adjusting tube is located at the front end, the swirl adjusting tube is connected to the air guide tube to form a straight wind channel.

[0012] In a preferred embodiment of the present invention, the cyclone includes a cyclone front cover, a cyclone rear cover and blades, the blades are installed between the cyclone front cover and the cyclone rear cover, the sealing section of the cyclone regulating tube is connected to the cyclone rear cover, and the air guide tube is connected to the cyclone front cover.

[0013] In a preferred embodiment of the present invention, the regulator includes an adjusting structure and a connecting rod, wherein the adjusting structure is installed on the outside of the air inlet housing, one end of the connecting rod is connected to the adjusting structure, and the other end is connected to the regulating tube.

[0014] In a preferred embodiment of the present invention, the hydrogen-oxygen and fuel mixing ejection device comprises a hydrogen-oxygen nozzle at a central position, an atomized fuel nozzle and an hydrogen-oxygen nozzle at an outer position, and the hydrogen-oxygen nozzle at the central position, the atomized fuel nozzle and the hydrogen-oxygen nozzle at the outer position are formed as a whole in the form of a concentric sleeve.

[0015] The beneficial effects of the present invention are as follows: the flame-adjustable burner for the combustion of hydrogen and oxygen combined with fuel can change the swirl intensity at the combustion air outlet, and achieve the change between the length of the combustion flame under the condition of constant combustion power, and the operation is simple. The catalytic characteristics of hydrogen and oxygen are used to improve the ignition performance of the fuel, increase the burnout rate, reduce the carbon black in the flue gas, and reduce the pollution of the combustion to the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of a preferred embodiment of a flame-adjustable burner for combined combustion of hydrogen and oxygen and fuel according to the present invention;

[0017] Figure 2 is a schematic diagram of the structure in which the rotating airflow regulating structure is located at the position where the combustion air enters tangentially;

[0018] Figure 3 is a schematic diagram of the structure in which the rotating airflow regulating structure is located at the position where the combustion air enters tangentially;

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of a preferred embodiment of a hydrogen-oxygen-fuel mixing and spraying device of the present invention;

[0020] Figure 5 yes Figure 4 The internal structure diagram of the hydrogen and oxygen gas and fuel mixing and ejecting device shown;

[0021] Figure 6 yes Figure 5 Detailed annotated diagram of the internal structure;

[0022] Figure 7 It is a three-dimensional structural schematic diagram of a preferred embodiment of the rotary airflow regulating structure of the present invention;

[0023] Figure 8 yes Figure 7 A cross-sectional view of the internal structure of the rotating airflow regulating structure in the first state;

[0024] Fig. 9 yes Figure 8 AA section view;

[0025] Fig.10 yes Figure 7 A cross-sectional view of the internal structure of the rotating airflow regulating structure in the second state;

[0026] Fig.11 yes Fig.10 BB cross-sectional view;

[0027] Fig.12 yes Figure 7 The schematic diagram of the installation structure of the regulator shown;

[0028] Fig.13 It is a cross-sectional view of the internal structure of another preferred embodiment of the rotary airflow regulating structure of the present invention in the first state.

[0029] The markings of the components in the accompanying drawings are as follows:

[0030] 100-hydrogen oxygen and fuel mixing ejection device, 110-hydrogen oxygen nozzle at the center position, 111-central hydrogen oxygen interface, 112-central hydrogen oxygen channel, 113-central hydrogen oxygen spray hole, 120-atomized fuel nozzle, 121-fuel interface, 122-compressed air interface, 123-fuel channel, 124-atomizing gas channel, 125-fuel nozzle, 126-atomizing gas nozzle, 127-atomizing gas sealing groove, 128-emulsified mixing chamber, 129-emulsified mixed liquid spray hole, 130-movable adjustment device, 131-sealing ring, 132-tightening sleeve, 133-left and right threaded joints, 134-guide rod, 140-hydrogen and oxygen nozzle at the outer position, 141-outer hydrogen and oxygen interface, 142-outer hydrogen and oxygen channel, 143-outer hydrogen and oxygen spray hole; 200-rotating airflow adjustment structure, 210-air guide pipe, 220-cyclone front cover, 230-blades, 240-cyclone rear cover, 250-rotating adjustment tube, 260-connecting rod, 270-air inlet shell, 280-rear sleeve, 290-adjustment structure, 291-outer spiral tube, 292-inner spiral tube, 293-handle; 300-combustion nozzle. DETAILED DESCRIPTION

[0031] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0032] See also Figure 1-Figure 13 It should be noted that the diagrams provided in this embodiment illustrate the basic concept of the present invention, and the components of the present invention in the diagrams are drawn according to the number, shape and size of components in actual implementation. The embodiments of the present invention include:

[0033] like Figure 1 As shown, a flame adjustable burner for the combined combustion of oxygen and hydrogen with fuel comprises: an oxygen and hydrogen mixed spraying device 100, a swirl airflow regulating structure 200 and a combustion nozzle 300. The oxygen and hydrogen mixed spraying device 100 is installed at the center of the burner, and the swirl airflow regulating structure 200 is located on the concentric outer side of the oxygen and hydrogen mixed spraying device 100 and is concentrically connected to the combustion nozzle 300 located at the front end. The combustion nozzle 300 has the function of stabilizing the flame, and the combustion nozzle 300 shown in this embodiment is in a bell-mouth shape.

[0034] Combination Figure 2 and 3As shown, the rotating airflow regulating structure 200 has two positions adjusted by the regulator: a combustion air tangential entry position and a combustion air radial entry position. Figure 2 As shown, the rotating airflow adjustment structure 200 is located at the position where the combustion air enters tangentially, and a radial diffusion airflow is formed at the combustion nozzle 300, forming a short flame or a flat flame. Figure 3 As shown, the rotating airflow adjustment structure 200 is located at the radial entry position of the combustion air, and an axial airflow is formed at the combustion nozzle 300 to form a torch-shaped long flame. The fuel used for combustion in combination with hydrogen and oxygen uses liquid fuel, and can also be designed to use gas fuel, powdered solid fuel, or a mixture of multiple fuels; it is easy to replace and has strong adaptability. The hydrogen and oxygen mixed fuel ejection device 100 uses the catalytic properties of hydrogen and oxygen to improve the ignition performance of the fuel, increase the burnout rate, reduce the carbon black in the flue gas, and reduce the pollution of the combustion to the environment.

[0035] Combination Figure 4 , Figure 5 and Figure 6 As shown, the oxygen-hydrogen and fuel mixing spraying device 100 used in the flame adjustable burner for combined combustion of oxygen-hydrogen and fuel of the present invention comprises: an oxygen-hydrogen nozzle 110 at the center, an atomized fuel nozzle 120, a moving adjustment device 130 and an oxygen-hydrogen nozzle 140 at the outer position; the oxygen-hydrogen nozzle 110 at the center, the atomized fuel nozzle 120 and the oxygen-hydrogen nozzle at the outer position are formed as a whole in the form of a concentric sleeve. The oxygen-hydrogen nozzle 110 at the center described in this embodiment is arranged at the coaxial center of the oxygen-hydrogen and fuel mixing spraying device and passes through the atomized fuel nozzle 120. The moving adjustment device 130 can move the oxygen-hydrogen nozzle 110 at the center and the compressed air atomized fuel nozzle 120 forward and backward by rotating the left and right threaded joints 131.

[0036] The oxygen-hydrogen nozzle 110 at the center position includes a central oxygen-hydrogen interface 111, a central oxygen-hydrogen channel 112 and a central oxygen-hydrogen spray hole 113. The central oxygen-hydrogen interface 111, the central oxygen-hydrogen channel 112 and the central oxygen-hydrogen spray hole 113 form a closed channel. The central oxygen-hydrogen channel 112 passes through a fuel nozzle 120 atomized by compressed air, and the central oxygen-hydrogen spray hole 113 sprays oxygen-hydrogen. In this embodiment, the central oxygen-hydrogen spray hole 113 is made into a single hole.

[0037] In this embodiment, the atomized fuel nozzle 120 is a compressed air atomized fuel nozzle 120, including a fuel interface 121, a fuel channel 123, a fuel nozzle 125, a compressed air interface 122, a compressed air channel 124, a compressed air nozzle 126, an atomizing gas sealing groove 127, an emulsified mixing chamber 128 and an emulsified mixed liquid spray hole 129. The fuel interface 121, the fuel channel 123 and the fuel nozzle 125 form a fuel channel, and the fuel nozzle 125 is connected to the emulsified mixing chamber 128. The compressed air interface 122, the compressed air channel 124 and the compressed air nozzle 126 form a compressed air channel, and the compressed air nozzle 126 is connected to the emulsified mixing chamber 128. The specific process is: the fuel enters the emulsified mixing chamber 128 through the fuel interface 121, the fuel channel 123 and the fuel nozzle 125; at the same time, the compressed air enters the emulsified mixing chamber 128 through the compressed air interface 122, the compressed air channel 124 and the compressed air nozzle 126, and the front end of the compressed air channel is formed by the atomizing gas sealing groove 127 to form a sealed maze. The fuel and the compressed air form an emulsified mixture in the emulsified mixing chamber 128, and finally sprayed out from the emulsified mixture spray hole 129. Optionally, the emulsified mixture spray hole 129 is made into a coaxial expansion angle equally divided hole. The atomized fuel nozzle 120 with an internal mixing atomization spray structure is shown in this embodiment. The atomized fuel nozzle 120 can also adopt an external mixing atomization spray structure. This structure is relatively simple and will not be illustrated one by one. Similarly, the atomized fuel nozzle 120 can be a compressed air atomized fuel nozzle or a steam atomized fuel nozzle.

[0038] The hydrogen-oxygen gas nozzle 140 at the outer position includes an outer hydrogen-oxygen gas interface 141, an outer hydrogen-oxygen gas channel 142 and an outer hydrogen-oxygen gas spray hole 143. The outer hydrogen-oxygen gas interface 141 and the outer hydrogen-oxygen gas channel 142 form a closed channel, and the hydrogen-oxygen gas is sprayed out through the outer hydrogen-oxygen gas spray hole 143. Optionally, the outer hydrogen-oxygen gas spray hole 143 is made into a coaxial contraction angle equally divided hole to form a coaxial intersection angle with the emulsified mixed liquid spray hole 129.

[0039] Combination Figure 4As shown, the hydrogen-oxygen and fuel mixing ejection device of this embodiment is a cylindrical structure as a whole, the nozzle of the hydrogen-oxygen nozzle at the center position (central hydrogen-oxygen spray hole 113), the nozzle of the hydrogen-oxygen nozzle at the outer position (outer hydrogen-oxygen spray hole 143) and the nozzle of the atomized fuel nozzle (emulsified mixed liquid spray hole 129) are located at the front end, and the rear end has a central hydrogen-oxygen interface 111, a fuel interface 121, a compressed air interface 122 and an outer hydrogen-oxygen interface 141. In this embodiment, the central hydrogen-oxygen interface 111 is located at the rear end surface, and the fuel interface 121, the compressed air interface 122 and the outer hydrogen-oxygen interface 141 are located on the side in sequence. The said moving adjustment device 3 is provided between the said compressed air interface 122 and the said outer hydrogen-oxygen interface 141.

[0040] Combination Figure 5 and Figure 6 As shown, the movable adjustment device 130 includes a sealing ring 131, a compression sleeve 132, a left and right threaded joint 133 and a guide rod 134. The compression sleeve 132 is sleeved outside the atomized fuel nozzle 120. The sealing ring 131 cooperates with the hydrogen and oxygen nozzle 140 at the outer position and the compression sleeve 132 for sealing. One end of the left and right threaded joint 133 is connected to the compression sleeve 132, and the other end of the left and right threaded joint 133 is connected to the atomized fuel nozzle 120. One end of the guide rod 134 is connected to the compressed air atomized fuel nozzle 120, and the other end of the guide rod 134 is connected to the hydrogen and oxygen nozzle 140 at the outer position. When adjusting, the left and right threaded joints 133 can be rotated to retract or extend the distance between the compressed air atomized fuel nozzle 120 and the hydrogen and oxygen nozzle 140 at the outer position.

[0041] The hydrogen and oxygen gas and fuel mixing and spraying device can make the hydrogen and oxygen gas mixed with fuel, heavy oil and other fuels to spray in stages, and then mix with external combustion-supporting air to form a burner. It is easy to install, simple in structure, and safe and reliable in combustion. Through the above method, the characteristics of hydrogen and oxygen gas can be used to improve the ignition performance of fuel, heavy oil and other fuels, and improve the burnout rate. Fuels with high calorific value and low price such as fuel and heavy oil are fully utilized, saving fuel costs. The water vapor after the combustion of hydrogen and oxygen gas can catalyze carbon particles, reduce carbon black in flue gas, reduce pollutant emissions, and alleviate environmental pressure.

[0042] Combination Figure 7-Figure 13 As shown, the rotating airflow regulating structure 200 used in the flame adjustable burner for combined combustion of hydrogen and oxygen and fuel of the present invention comprises: an air guide pipe 210, a cyclone, a cyclone regulator, an air inlet housing 270 and a regulator.

[0043] The air inlet housing 270 includes an internal cavity, an air inlet and an air outlet. In this embodiment, the air inlet housing 270 is L-shaped, the air inlet is located at one end of the L-shape, and the air outlet is located at the other end of the L-shape.

[0044] The air guide 210 is located at the air outlet. The air outlet is the front end of the air inlet housing 270. The air guide 210 is an airflow outlet pipe and is connected to the cyclone front cover 220. The direct current air or rotating air formed by the rotating airflow regulating structure is finally sprayed into the furnace through the air guide 210.

[0045] The cyclone is located in the inner cavity of the air inlet housing 270 and is connected to the air guide pipe 210. The cyclone in this embodiment includes a cyclone front cover 220, blades 230 and a cyclone rear cover 240, and the blades 230 are installed between the cyclone front cover 220 and the cyclone rear cover 240. As an example, the blades 230 are single bodies, with 6 blades evenly distributed and installed in a positive direction, and the airflow is guided by the blades 230 to form a right-handed rotating wind. The inner diameter of the cyclone rear cover 240 is consistent with the inner edge contour of the blade 230, and is flexibly matched with the outer diameter of the sealing section of the swirl regulating tube 250.

[0046] The vortex adjuster is located in the internal cavity, one end of the vortex adjuster is connected to the cyclone, and the other end is connected to the rear end of the air inlet housing 270. The vortex adjuster includes a vortex adjusting tube 250 and a rear sleeve 280, the rear sleeve 280 is installed at the rear end of the internal cavity, and the tail end of the rear sleeve 280 is closed. The vortex adjusting tube 250 includes a slotted section and a sealing section, and the slotted section of the vortex adjusting tube 250 is sleeve-connected with the rear sleeve 280; further preferably, the inner diameter of the rear sleeve 280 and the slotted section of the vortex adjusting tube 250 are matched or the outer diameter is movably matched. The sealing section of the vortex adjusting tube 250 is connected to the cyclone rear cover 240, and the air guide pipe 210 is connected to the cyclone front cover 220. As an example, the sealing section of the vortex adjusting tube 250 is a smooth tube, and the slotted section of the vortex adjusting tube 250 is a pipe with 6 evenly distributed slots on the surface. As an example, the slotted equivalent cross-section of the slotted section of the swivel regulating tube 250 is consistent with the equivalent cross-section formed by the blade 230, and both are in the shape of a long slot. The regulator regulates the forward and backward movement of the swivel regulating tube 250 between the rear sleeve 280 and the air guide tube 210. In order to limit the displacement distance of the swivel regulating tube 250, the outer wall of the swivel regulating tube 250 in this embodiment has a protruding structure, and is located at the connection between the sealing section and the slotted section of the swivel regulating tube 250. Figure 4 As shown, when the swirl regulating tube 250 is located at the front end, the protruding structure contacts the cyclone rear cover 240, limiting the swirl regulating tube 250 from further moving forward.

[0047] The regulator is connected to the swivel tube 250, and the regulator regulates the forward and backward movement of the swivel tube 250 between the rear sleeve 280 and the air guide tube 210. As an example, the regulator includes an adjustment structure 290 and a connecting rod 260. The adjustment structure 290 is located on the outer side 7 of the air inlet shell and is connected to one end of the connecting rod 260. The other end of the connecting rod 260 is connected to the swivel tube 250. As an example, in order to facilitate the connection with the connecting rod 260, the outer wall of the swivel tube 250 has a protruding ear-shaped connecting structure, and the connecting rod 260 is connected to the ear-shaped connecting structure, and the ear-shaped connecting structure is located at the connection between the sealing section and the slotted section of the swivel tube 250.

[0048] Combination Fig.12 As shown, as an example, the adjustment structure 290 is a threaded rotation conversion linear pulling method, which is located on the outside of the air inlet housing 270 and connected to the connecting rod 260. Specifically, the adjustment structure 290 includes an outer spiral tube 291 and an inner spiral tube 292, the front end of the outer spiral tube 291 is fixed on the outside of the air inlet housing 270, the front end of the inner spiral tube 292 is connected to the rear end of the outer spiral tube 291 by threads, the connecting rod 260 is sleeved in the outer spiral tube 291 and the inner spiral tube 292, the front end of the connecting rod 260 is connected to the adjusting tube 250, and the rear end of the connecting rod 260 is connected to the rear end of the inner spiral tube 292. In order to facilitate adjustment, the rear end of the inner spiral tube 292 has a handle 293 structure.

[0049] The operation process of the adjustment structure 290 shown in this embodiment is as follows: by rotating the handle 293 on the outside of the adjustment structure 290, the connecting rod 260 can be driven to move forward or backward, thereby linking the adjustment tube 250 to move forward and backward, so that the airflow can be converted between the air inlet groove formed by the tangential blades and the straight groove at the rear end of the adjustment tube.

[0050] The action process of the rotating airflow regulating structure shown in this embodiment is as follows: Figure 8 and Fig. 9 As shown, when the swirl regulating tube 250 is located at the rear end, the cyclone is connected to the air guide 210 to form a cyclone channel. Specifically, when the swirl regulating tube 250 is located at the rear end, the slotted section of the swirl regulating tube 250 is located at the rear sleeve 280, the straight slot of the slotted section is closed by the rear sleeve 280, and the air inlet slot formed by the tangential blades of the cyclone is opened. In this way, the airflow enters from the air inlet of the air inlet housing 270, flows through the air inlet slot formed by the tangential blades of the cyclone, and is finally discharged from the air guide 210. Fig.10 and Fig.11As shown, when the swirl regulating tube is located at the front end, the swirl regulating tube is connected with the air guide tube to form a straight air channel. Specifically, when the swirl regulating tube 250 is located at the front end, the slotted section of the swirl regulating tube 250 leaves the rear sleeve 280, the straight slot of the slotted section is opened, and the sealing section of the swirl regulating tube 250 is located in the cyclone, so the air inlet slot formed by the tangential blades of the cyclone is closed. In this way, the airflow enters from the air inlet of the air inlet housing 270, flows through the straight slot of the slotted section of the swirl regulating tube 250, enters the sealing section of the swirl regulating tube 250, and finally is discharged from the air guide tube 210.

[0051] Combination Fig.13 As shown: the airflow swirl intensity S>1.3 formed by the entire airflow on the tangential blades, when a trumpet-shaped expansion pipe is used at the front end outlet of the air guide pipe 3, a flat airflow can be formed.

[0052] In summary, the rotating airflow regulating structure, through the forward and backward movement of the regulating swirl pipe, enables the airflow in the air inlet housing to obtain a stepless conversion from 100% direct air to 100% rotating air at the front end outlet of the air guide pipe without changing the air volume, and the required flame shape can be obtained in the burner flame length adjustment. In addition, when the direct air and the rotating air change continuously, it has a disturbing effect on the airflow in the furnace, which can make the fuel burn fully, improve the heat utilization rate, improve the furnace temperature uniformity, and improve the heating quality.

[0053] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "left", "right", "inside", "outside", "front", and back, etc., are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the inventive product is usually placed when used. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0054] Therefore, the present invention effectively overcomes various shortcomings in the prior art and has a high industrial utilization value. The above embodiments are only illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology can modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A flame-adjustable burner for the combustion of hydrogen and oxygen combined with fuel, characterized in that: It includes: a hydrogen-oxygen and fuel mixing ejection device, a rotating airflow adjustment structure and a combustion nozzle; The rotating airflow regulating structure comprises an air inlet housing, and a cyclone, a vortex regulator and a regulator connected in sequence, wherein the cyclone and the vortex regulator are installed in the air inlet housing; The combustion nozzle is installed at the air outlet of the air inlet housing; the cyclone, the vortex regulator and the combustion nozzle are connected to form an air outlet channel; The hydrogen-oxygen-fuel mixing and spraying device is installed in the air outlet passage; The air inlet housing comprises an internal cavity, an air inlet and an air outlet; the air guide pipe is located at the air outlet; the vortex adjuster and the cyclone are located in the internal cavity, the vortex adjuster comprises a rear sleeve and a vortex adjustment pipe, the rear sleeve is installed at the tail end of the internal cavity, the vortex adjustment pipe comprises a slotted section and a sealing section, the slotted section of the vortex adjustment pipe is sleeve-connected with the rear sleeve; one end of the cyclone is connected to the sealing section of the vortex adjustment pipe, and the other end of the cyclone is connected to the air guide pipe; The regulator is connected to the swirl adjusting tube, and the swirl adjusting tube moves back and forth between the rear sleeve and the air guide tube; when the swirl adjusting tube is located at the rear end, the cyclone is connected to the air guide tube to form a cyclone channel; when the swirl adjusting tube is located at the front end, the swirl adjusting tube is connected to the air guide tube to form a straight wind channel.

2. The flame-adjustable burner for combined combustion of hydrogen and oxygen and fuel according to claim 1 is characterized in that: The fuel that is burned in combination with hydrogen and oxygen is liquid fuel, gaseous fuel, solid fuel or a mixture of multiple fuels.

3. The flame-adjustable burner for combined combustion of hydrogen and oxygen and fuel according to claim 1 is characterized in that: The combustion nozzle is in a trumpet shape.

4. The flame-adjustable burner for combined combustion of hydrogen and oxygen and fuel according to claim 1 is characterized in that: The rotating airflow regulating structure has two positions adjusted by a regulator: a combustion air tangential entry position and a combustion air radial entry position.

5. The flame-adjustable burner for combined combustion of hydrogen and oxygen and fuel according to claim 4 is characterized in that: The rotating airflow regulating structure is located at the position where the combustion air enters tangentially, and a radial diffusion airflow is formed at the combustion nozzle, forming a short flame or even a flat flame.

6. The flame-adjustable burner for combined combustion of hydrogen and oxygen and fuel according to claim 4, characterized in that: The rotating airflow regulating structure is located at the radial entry position of the combustion-supporting air, and an axial airflow is formed at the combustion nozzle to form a torch-shaped long flame.

7. The flame-adjustable burner for combined combustion of hydrogen and oxygen and fuel according to claim 1, characterized in that: The cyclone comprises a cyclone front cover, a cyclone rear cover and blades, wherein the blades are installed between the cyclone front cover and the cyclone rear cover, the sealing section of the cyclone regulating pipe is connected to the cyclone rear cover, and the air guide pipe is connected to the cyclone front cover.

8. The flame-adjustable burner for combined combustion of hydrogen and oxygen and fuel according to claim 1, characterized in that: The regulator comprises an adjusting structure and a connecting rod. The adjusting structure is installed on the outside of the air inlet housing. One end of the connecting rod is connected to the adjusting structure, and the other end is connected to the regulating tube.

9. The flame-adjustable burner for combined combustion of hydrogen and oxygen and fuel according to claim 1, characterized in that: The hydrogen-oxygen and fuel mixing ejection device comprises a hydrogen-oxygen nozzle at a central position, an atomized fuel nozzle and an hydrogen-oxygen nozzle at an outer position. The hydrogen-oxygen nozzle at a central position, the atomized fuel nozzle and the hydrogen-oxygen nozzle at an outer position are integrally formed in the form of concentric sleeves.

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